<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <!-- <img :src='logo' alt=""> -->
         <img :src="logoPng" alt="">
      </div>

      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef"  :rules="loginFormRules" :model="loginForm" label-width="0px" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop='username'>
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username" ></el-input>
       </el-form-item>
       <!-- 密码 -->
       <el-form-item prop='password'>
          <el-input type="password" prefix-icon="iconfont icon-3702mima" v-model="loginForm.password" ></el-input>
       </el-form-item>
       <!-- 按钮 -->
       <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
       </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
import logoPng from '../assets/logo.png'
export default {
    
    data(){
      return {
       logoPng,
      //  这是登录表单的数据对象
       loginForm:{
         username:'admin',
         password:'123456'

       },
       loginFormRules:{
         username: [
            { required: true, message: '请输入登录账号', trigger: 'blur' },
            { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
          ],
          password:[
            { required: true, message: '请输入登录密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
          ]
       }
      }
    },
    methods:{
      // 点击重置按钮，重置登录表单
        resetLoginForm(){
          // console.log(this)
          this.$refs.loginFormRef.resetFields()
        },
        // 
        login(){
          this.$refs.loginFormRef.validate( async valid=>{
            // console.log(valid)
            if(!valid) return ;

            const { data:res} = await this.$http.post('login',this.loginForm);

            if(res.meta.status !== 200) return this.$message.error('登录失败');
              this.$message.success('登录成功');

              // 1.保存token到sessionStorage
              window.sessionStorage.setItem('token',res.data.token)
              // 2.编程式导航跳转到/home
              this.$router.push('/home')

          })
        }
    }
}
</script>
<style lang="less" scoped>
.login_container{
  background-color: #2b4b6b;
  height: 100%;
}
.login_box{
  width:450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }}

.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
    .btns{
      display: flex;
      justify-content: flex-end;
    }
}
</style>